Photosensitive composition

Abstract

A photosensitive composition contains a polymer having a unit represented by formula I, and a photosensitive agent: ##STR1## wherein each of R 1 to R 4 represents a hydrogen atom, an alkyl group, an alkoxyl group, or a substituted or non-substituted allyl group, at least one of R 1 to R 4 being an alkyl groups having 1 to 10 carbon atoms and containing silicon, l represents a positive integer, and each of a and b represents an integer from 1 to 3, and c represents an integer from 0 to 2, a+b+c not exceeding 4.

What is claimed is: 
     
       1. A photosensitive composition comprising: a polymer having a unit represented by formula I ##STR109## wherein each of R 1  to R 4  represents a hydrogen atom, an alkyl group, an alkoxy group, a substituted or non-substituted allyl group, or these groups containing silicon, at least R 3  or R 4  being a silicon containing alkyl group having 1 to 10 carbon atoms a carbon atom of which is directly attached to the main chain of the polymer represented by formula I;   l represents a positive integer; and   each of a and b represents an integer from 1 to 3, and c represents an integer from 0 to 2, a+b+c not exceeding 4,   in admixture with a photosensitive effective amount of at least one photosensitive agent selected from the group consisting of a negative type azide compound, a positive type benzoquinone diazide compound and positive type naphthoquinone diazide compound.   
     
     
       2. A composition according to claim 1, wherein said polymer having the unit represented by formula I is synthesized by condensing an organic silicon compound represented by formula III with an aldehyde: ##STR110## wherein R 13  : a hydrogen atom, a hydroxyl group, or an alkoxy group; R 14  to R 24 , being all the same or different: a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, a substituted or nonsubstituted naphthyl group:   p and q: 0 or 1; and   s: a positive integer.   
     
     
       3. A composition according to claim 1, wherein said polymer having the unit represented by formula I is synthesized by condensing an organic silicon compound represented by formula IV with an aldehyde: ##STR111## wherein R 13  : a hydrogen atom, a hydroxyl group;, or an alkoxy group; R 14  to R 24 , being all the same or different: a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, a substituted or nonsubstituted phenyl group, or a substituted or nonsubstituted naphthyl group:   p and q: 0 or 1; and   s: a positive integer.   
     
     
       4. A composition according to claim 2, wherein said polymer having the unit represented by formula I is synthesized by adding and mixing a phenol or phenol derivative not containing silicon with the organic silicon compound represented by formula III and condensing the resultant mixture with an aldehyde. 
     
     
       5. A composition according to claim 4, wherein the ratio of the organic silicon compound represented by formula III in said mixture is 20 to 80 mol %. 
     
     
       6. A composition according to claim 3, wherein said polymer having the unit represented by formula I is synthesized by adding and mixing a phenol or phenol derivative not containing silicon with the organic silicon compound represented by formula IV and condensing the resultant mixture with an aldehyde. 
     
     
       7. A composition according to claim 6, wherein the ratio of the organic silicon compound represented by formula IV in said mixture is 20 to 80 mol %. 
     
     
       8. A composition according to claim 1 wherein, said polymer having the unit represented by formula I is synthesized by condensing a carbonyl compound represented by formula V and a phenol or phenol derivative: ##STR112## wherein each of R 25  and R 26  represents a hydrogen atom, an allyl group or an alkyl group containing silicon and having 1 to 15 carbon atoms, at least one of R 25  and R 26  being an alkyl group containing silicon and having 1 to 15 carbon atoms. 
     
     
       9. A composition according to claim 1, further comprising: a polymer having a unit represented by formula II: ##STR113##  wherein R 5  : an alkyl group having 1 to 10 carbon atoms or a substituted or nonsubstituted aryl group; R 6  to R 10  : a hydrogen atom, a halogen atom, an alkyl group, an allyl group, a halogenoalkyl group, a cyanoalkyl group, a carboxyl group, an alkylcarboxyl group, an alkoxycarboxyl group, an alkoxyl group, an acyloxyl group, an aryl group, or an alkyl-substituted aryl group, at least one of R 6  to R 10  being an aryl group substituted by a hydroxyl group;   R 11  and R 12  : a vinyl group, an allyl group, a γ-methacryloxypropyl group, an alkyl group having 1 to 10 carbon atoms, a substituted or nonsubstituted aryl group, or a substituted or nonsubstituted siloxyl group;   m: a positive integer; n: 0 or a positive integer, wherein the mixing ratio A/(A+B) of polymer (A) having the unit represented by formula I and polymer (B) having the unit represented by formula II is 20 to 80 wt %.     
     
     
       10. A composition according to claim 1, wherein said photosensitive agent is an azide compound or naphthoquinon diazide compound. 
     
     
       11. A composition according to claim 10, wherein said photosensitive agent has sensitivity with respect to a g-line (wavelength: 436 nm) of a mercury emission spectrum. 
     
     
       12. A composition according to claim 11, wherein said photosensitive agent is bis(1-naphthoquinone-2-diazido-5-sulfonic acid)-2,3,4-trihydroxybenzophenone ester, tris(1-naphthoquinone-2-diazido-5-sulfonic acid)-2,3,4,4'-tetrahydroxybenzophenone ester, 1-(p-azidophenyl)-4-(2-furyl)-1,3-butadiene. 
     
     
       13. A composition according to claim 1, wherein the mixing ratio of said photosensitive agent is 5 to 100 parts by weight with respect to 100 parts by weight of said polymer. 
     
     
       14. A composition according to claim 1, further comprising an alkali soluble resin. 
     
     
       15. A composition according to claim 14, wherein said alkali soluble resin is a resin having phenolic hydroxy group. 
     
     
       16. A composition according to claim 14, wherein said alkali-soluble resin is present in an amount of 5 to 100 parts by weight with respect to 100 parts by weight of said polymer as the main component.